I have a 2003 Yukon SLT 4WD with 5.1 engine throwing codes C0283, B0103, C0660. What do they mean?
DTC C0283 (W/O JL4)
The traction control switch is a momentary-contact, normally-open switch that can be used to disable the traction control system (TCS). Each time the traction control switch is pressed, the TCS enabled/disabled status changes. When TCS is disabled, the electronic brake control module (EBCM) illuminates the traction off indicator by opening the service traction control signal circuit.
DTC C0283 (W/JL4)
The traction control switch is a momentary-contact, normally-open switch that can be used to disable the engine torque management function of the TCS. On two wheel drive or all wheel drive vehicles, the traction control switch is directly monitored by the EBCM. On four wheel drive vehicles equipped with selectable 4 LO, the traction contol switch is monitored by the transfer case shift control module (TCSCM), which sends the traction control switch status information to the EBCM on the serial data link. Each time the traction control switch is pressed, the VSES and TCS enabled/disabled status changes. When TCS is disabled, the EBCM sends serial data messages to the IPC to turn ON the traction off indicator and display the stability system disabled message.
--------------------------------------------------------------------------------
DTC C0660
The exhaust solenoid valve is switched on and off via the suspension control module. The suspension control module provides a switched path to ground whenever exhaust activity is required and during a compressor "head-relief" sequence which occurs at compressor start-up if system pressure is lower than 68.95 kPa (10 psi). The suspension control module continually monitors the exhaust solenoid valve circuitry to determine if the voltage level agrees with the commanded state.
DTC B0100, B0101, B0102, B0103, B0104, or B0105
The inflatable restraint front end sensor utilizes a unidirectional 2-wire circuit. The front end sensor modulates current on the interface to send ID, State of Health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the front end sensor. When the ignition is turned on and input power from the SDM is first detected, the front end sensor responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The front end sensor continually communicates status messages to the SDM, which determines if a fault is present in the front end sensor circuit. When a fault is detected, the SDM resets the front end sensor twice by removing and reapplying power. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).
×